Patent US2729546A successfully refreshed from Google Patents.
US2729546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing inert gases
Assignee: Cardox Corp
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Filing: 1952-06-09
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Granted: 1956-01-03
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Expires: 1972-06-09
Abstract
No abstract record available.
Inventors
- 👤 Hilding V Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:58
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A DEVICE FOR PRODUCING INERT GAS, COMPRISING A HOUSING HAVING A GAS COLLECTING CHAMBER THEREIN, A PARTITION MOUNTED IN SAID HOUSING FOR SUPPORTING A FUEL BED BELOW SAID GAS COLLECTING CHAMBER AND IN SPACED RELATIONSHIP WITH THE BOTTOM OF THE HOUSING, MEANS PROVIDING A CONFINED PASSAGEWAY BETWEEN THE GAS COLLECTING CHAMBER AND THE SPACE BELOW SAID FUEL SUPPORTING PARTITION, SAID PASSAGEWAY HAVING OPENINGS INTO SAID GAS COLLECTING CHAMBER AT DIFFERENT DISTANCES FROM SAID FUEL BED, MEANS FOR INTRODUCING A PRESSURE AIR STREAM INTO SAID PASSAGEWAY IN A DIRECTION TO ENTRAIN A PORTION OF THE GASEOUS PRODUCTS OF COMBUSTION FROM SAID COLLECTING CHAMBER THROUGH SAID OPENINGS AND TO CAUSE SAID AIR AND SAID ENTRAINED GASES TO TRAVERSE SAID PASSAGEWAY FOR DELIVERY TO THE FUEL BED THROUGH SAID PARTITION, MEANS FOR CONVERSELY VARYING THE SIZE OF SAID OPENINGS TO CONTROL THE PORTION OF THE COLLECTING CHAMBER FROM WHICH THE GASEOUS PRODUCTS OF COMBUSTION ARE ENTRAINED INTO SAID
Claim 2
Independent Claim
155 words
A DEVICE FOR PRODUCING INERT GAS, COMPRISING A HOUSING HAVING A GAS COLLECTING CHAMBER THEREIN, A PARTITION MOUNTED IN SAID HOUSING FOR SUPPORTING A FUEL BED BELOW SAID GAS COLLECTING CHAMBER AND IN SPACED RELATIONSHIP WITH THE BOTTOM OF THE HOUSING, MEANS PROVIDING A CONFINED PASSAGEWAY BETWEEN THE GAS COLLECTING CHAMBER AND THE SPACE BELOW SAID FUEL SUPPORTING PARTITION, SAID PASSAGEWAY HAVING OPENINGS INTO SAID GAS COLLECTING CHAMBER AT DIFFERENT DISTANCES FROM SAID FUEL BED, MEANS FOR INTRODUCING A PRESSURE AIR STREAM INTO SAID PASSAGEWAY IN A DIRECTION TO ENTRAIN A PORTION OF THE GASEOUS PRODUCTS OF COMBUSTION FROM SAID COLLECTING CHAMBER THROUGH SAID OPENINGS AND TO CAUSE SAID AIR AND SAID ENTRAINED GASES TO TRAVERSE SAID PASSAGEWAY FOR DELIVERY TO THE FUEL BED THROUGH SAID PARTITION, MEANS FOR CONVERSELY VARYING THE SIZE OF SAID OPENINGS TO CONTROL THE PORTION OF THE COLLECTING CHAMBER FROM WHICH THE GASEOUS PRODUCTS OF COMBUSTION ARE ENTRAINED INTO SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |